>>>
>>>Supposing you refer to a year, I would use Mil. If you don't agree, I'll have to look in the
>>Larousse
>>
>>Never seen Mil in French
>>
>>>
>>>Oh, and by the way, a Walloon is a real francophone ;-)
>>
>>Always wondered what the hell they sounded like! :-)
>
>
>Re: Mil
>There you are http://www.globetrotter.net/gt/usagers/mbeaudin/regles.html look under #5

Yes, it says you can use "mil" but not that you must. As I said, I've never seen it (having heard it spoken much more than seeing it written). I enclose the rule quoted:

On peut écrire « mil » s'il est question de l'année seulement mais uniquement dans les cas où « mille » commence la date et qu'il est suivi d'un ou de plusieurs autres nombres :
Ex. L'an mil sept cent, MAIS l'an deux mille.